<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>帆布轨道</title>
		<link rel="stylesheet" type="text/css" href="./index.css"/>
	</head>
	<body>
		<div id="control-panel">
			<label>拖尾:</label>
			<input type="checkbox" name="trail" id="trail" checked />
			<button id="clear">Clear</button>
		</div>
		<canvas id="c"></canvas>
		
		<script src="./index.js"></script>
	</body>
</html>
